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arXiv 1503.06743quant-ph
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非全同原子间的准共振范德华相互作用

Quasi-resonant van der Waals interaction between non-identical atoms

Manuel Donaire, Romain Guérout, Astrid Lambrecht

摘要:

本文用含时量子方法计算了一对不同原子间的范德华相互作用,其中一个原子处于初始激发态,另一个原子处于基态。对于小的失谐,在所有距离上的相互作用主要是通过两个原子之间的双共振光子的交换来介导的。我们发现,它提出了时间和空间振荡。空间振荡项取决于两个原子的共振频率,而时间振荡的频率由它们的失谐量给出。我们分析我们的研究结果的物理内容,并讨论在何种程度上以前的冲突固定的方法提供兼容的结果。为了获得正确的结果,对因果关系的适当说明是必不可少的。

英文摘要:

We present a time-dependent quantum calculation of the van der Waals interaction between a pair of dissimilar atoms, one of which is initially excited while the other one is in its ground state. For small detuning, the interaction is predominantly mediated at all distances by the exchange of doubly resonant photons between the two atoms. We find that it presents both temporal and spatial oscillations. Spatially oscillating terms depend on the resonant frequencies of both atoms, while the frequency of the time oscillations is given by their detuning. We analyse the physical content of our findings and discuss to what extent previous conflicting stationary approaches provide compatible results. A proper account of causality is found essential in order to obtain the correct result.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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